Loudspeaker



FIG. 1 is a front and right side perspective view of the loudspeaker showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken line showing on the drawing disclosure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a loudspeaker, as shown. 